Introduce NON_ZERO_DURATION for animation unit tests

ui/wm/core/window_animations.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/wm/core/window_animations.h"
 
 #include <math.h>
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
 #include "base/time/time.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_observer.h"
 #include "ui/aura/window_property.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/compositor/layer_animation_sequence.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/compositor/layer_tree_owner.h"
+#include "ui/compositor/scoped_animation_duration_scale_mode.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/gfx/animation/animation.h"
 #include "ui/gfx/interpolated_transform.h"
 #include "ui/gfx/rect_conversions.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/vector2d.h"
 #include "ui/gfx/vector3d_f.h"
 #include "ui/wm/core/window_util.h"
 #include "ui/wm/core/wm_core_switches.h"
 #include "ui/wm/public/animation_host.h"
@@ skipping 603 matching lines @@
   case WINDOW_ANIMATION_TYPE_BOUNCE:
     AnimateBounce(window);
     return true;
   default:
     NOTREACHED();
     return false;
   }
 }
 
 bool WindowAnimationsDisabled(aura::Window* window) {
-  return (!gfx::Animation::ShouldRenderRichAnimation() || (window &&
-          window->GetProperty(aura::client::kAnimationsDisabledKey)) ||
-      CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kWindowAnimationsDisabled));
+  // Individual windows can choose to skip animations.
+  if (window && window->GetProperty(aura::client::kAnimationsDisabledKey))
+    return true;
+
+  // Animations can be disabled globally for testing.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kWindowAnimationsDisabled))
+    return true;
+
+  // Tests of animations themselves should still run even if the machine is
+  // being accessed via Remote Desktop.
+  if (ui::ScopedAnimationDurationScaleMode::duration_scale_mode() ==
+      ui::ScopedAnimationDurationScaleMode::NON_ZERO_DURATION)
+    return false;
+
+  // Let the user decide whether or not to play the animation.
+  return !gfx::Animation::ShouldRenderRichAnimation();
 }
 
 }  // namespace wm